1 /* 2 * sym53c500_cs.c Bob Tracy (rct@frus.com) 3 * 4 * A rewrite of the pcmcia-cs add-on driver for newer (circa 1997) 5 * New Media Bus Toaster PCMCIA SCSI cards using the Symbios Logic 6 * 53c500 controller: intended for use with 2.6 and later kernels. 7 * The pcmcia-cs add-on version of this driver is not supported 8 * beyond 2.4. It consisted of three files with history/copyright 9 * information as follows: 10 * 11 * SYM53C500.h 12 * Bob Tracy (rct@frus.com) 13 * Original by Tom Corner (tcorner@via.at). 14 * Adapted from NCR53c406a.h which is Copyrighted (C) 1994 15 * Normunds Saumanis (normunds@rx.tech.swh.lv) 16 * 17 * SYM53C500.c 18 * Bob Tracy (rct@frus.com) 19 * Original driver by Tom Corner (tcorner@via.at) was adapted 20 * from NCR53c406a.c which is Copyrighted (C) 1994, 1995, 1996 21 * Normunds Saumanis (normunds@fi.ibm.com) 22 * 23 * sym53c500.c 24 * Bob Tracy (rct@frus.com) 25 * Original by Tom Corner (tcorner@via.at) was adapted from a 26 * driver for the Qlogic SCSI card written by 27 * David Hinds (dhinds@allegro.stanford.edu). 28 * 29 * This program is free software; you can redistribute it and/or modify it 30 * under the terms of the GNU General Public License as published by the 31 * Free Software Foundation; either version 2, or (at your option) any 32 * later version. 33 * 34 * This program is distributed in the hope that it will be useful, but 35 * WITHOUT ANY WARRANTY; without even the implied warranty of 36 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 37 * General Public License for more details. 38 */ 39 40 #define SYM53C500_DEBUG 0 41 #define VERBOSE_SYM53C500_DEBUG 0 42 43 /* 44 * Set this to 0 if you encounter kernel lockups while transferring 45 * data in PIO mode. Note this can be changed via "sysfs". 46 */ 47 #define USE_FAST_PIO 1 48 49 /* =============== End of user configurable parameters ============== */ 50 51 #include <linux/module.h> 52 #include <linux/moduleparam.h> 53 #include <linux/errno.h> 54 #include <linux/init.h> 55 #include <linux/interrupt.h> 56 #include <linux/kernel.h> 57 #include <linux/sched.h> 58 #include <linux/slab.h> 59 #include <linux/string.h> 60 #include <linux/ioport.h> 61 #include <linux/blkdev.h> 62 #include <linux/spinlock.h> 63 #include <linux/bitops.h> 64 65 #include <asm/io.h> 66 #include <asm/dma.h> 67 #include <asm/irq.h> 68 69 #include <scsi/scsi_ioctl.h> 70 #include <scsi/scsi_cmnd.h> 71 #include <scsi/scsi_device.h> 72 #include <scsi/scsi.h> 73 #include <scsi/scsi_host.h> 74 75 #include <pcmcia/cs_types.h> 76 #include <pcmcia/cs.h> 77 #include <pcmcia/cistpl.h> 78 #include <pcmcia/ds.h> 79 #include <pcmcia/ciscode.h> 80 81 /* ================================================================== */ 82 83 #ifdef PCMCIA_DEBUG 84 static int pc_debug = PCMCIA_DEBUG; 85 module_param(pc_debug, int, 0); 86 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args) 87 static char *version = 88 "sym53c500_cs.c 0.9c 2004/10/27 (Bob Tracy)"; 89 #else 90 #define DEBUG(n, args...) 91 #endif 92 93 /* ================================================================== */ 94 95 #define SYNC_MODE 0 /* Synchronous transfer mode */ 96 97 /* Default configuration */ 98 #define C1_IMG 0x07 /* ID=7 */ 99 #define C2_IMG 0x48 /* FE SCSI2 */ 100 #define C3_IMG 0x20 /* CDB */ 101 #define C4_IMG 0x04 /* ANE */ 102 #define C5_IMG 0xa4 /* ? changed from b6= AA PI SIE POL */ 103 #define C7_IMG 0x80 /* added for SYM53C500 t. corner */ 104 105 /* Hardware Registers: offsets from io_port (base) */ 106 107 /* Control Register Set 0 */ 108 #define TC_LSB 0x00 /* transfer counter lsb */ 109 #define TC_MSB 0x01 /* transfer counter msb */ 110 #define SCSI_FIFO 0x02 /* scsi fifo register */ 111 #define CMD_REG 0x03 /* command register */ 112 #define STAT_REG 0x04 /* status register */ 113 #define DEST_ID 0x04 /* selection/reselection bus id */ 114 #define INT_REG 0x05 /* interrupt status register */ 115 #define SRTIMOUT 0x05 /* select/reselect timeout reg */ 116 #define SEQ_REG 0x06 /* sequence step register */ 117 #define SYNCPRD 0x06 /* synchronous transfer period */ 118 #define FIFO_FLAGS 0x07 /* indicates # of bytes in fifo */ 119 #define SYNCOFF 0x07 /* synchronous offset register */ 120 #define CONFIG1 0x08 /* configuration register */ 121 #define CLKCONV 0x09 /* clock conversion register */ 122 /* #define TESTREG 0x0A */ /* test mode register */ 123 #define CONFIG2 0x0B /* configuration 2 register */ 124 #define CONFIG3 0x0C /* configuration 3 register */ 125 #define CONFIG4 0x0D /* configuration 4 register */ 126 #define TC_HIGH 0x0E /* transfer counter high */ 127 /* #define FIFO_BOTTOM 0x0F */ /* reserve FIFO byte register */ 128 129 /* Control Register Set 1 */ 130 /* #define JUMPER_SENSE 0x00 */ /* jumper sense port reg (r/w) */ 131 /* #define SRAM_PTR 0x01 */ /* SRAM address pointer reg (r/w) */ 132 /* #define SRAM_DATA 0x02 */ /* SRAM data register (r/w) */ 133 #define PIO_FIFO 0x04 /* PIO FIFO registers (r/w) */ 134 /* #define PIO_FIFO1 0x05 */ /* */ 135 /* #define PIO_FIFO2 0x06 */ /* */ 136 /* #define PIO_FIFO3 0x07 */ /* */ 137 #define PIO_STATUS 0x08 /* PIO status (r/w) */ 138 /* #define ATA_CMD 0x09 */ /* ATA command/status reg (r/w) */ 139 /* #define ATA_ERR 0x0A */ /* ATA features/error reg (r/w) */ 140 #define PIO_FLAG 0x0B /* PIO flag interrupt enable (r/w) */ 141 #define CONFIG5 0x09 /* configuration 5 register */ 142 /* #define SIGNATURE 0x0E */ /* signature register (r) */ 143 /* #define CONFIG6 0x0F */ /* configuration 6 register (r) */ 144 #define CONFIG7 0x0d 145 146 /* select register set 0 */ 147 #define REG0(x) (outb(C4_IMG, (x) + CONFIG4)) 148 /* select register set 1 */ 149 #define REG1(x) outb(C7_IMG, (x) + CONFIG7); outb(C5_IMG, (x) + CONFIG5) 150 151 #if SYM53C500_DEBUG 152 #define DEB(x) x 153 #else 154 #define DEB(x) 155 #endif 156 157 #if VERBOSE_SYM53C500_DEBUG 158 #define VDEB(x) x 159 #else 160 #define VDEB(x) 161 #endif 162 163 #define LOAD_DMA_COUNT(x, count) \ 164 outb(count & 0xff, (x) + TC_LSB); \ 165 outb((count >> 8) & 0xff, (x) + TC_MSB); \ 166 outb((count >> 16) & 0xff, (x) + TC_HIGH); 167 168 /* Chip commands */ 169 #define DMA_OP 0x80 170 171 #define SCSI_NOP 0x00 172 #define FLUSH_FIFO 0x01 173 #define CHIP_RESET 0x02 174 #define SCSI_RESET 0x03 175 #define RESELECT 0x40 176 #define SELECT_NO_ATN 0x41 177 #define SELECT_ATN 0x42 178 #define SELECT_ATN_STOP 0x43 179 #define ENABLE_SEL 0x44 180 #define DISABLE_SEL 0x45 181 #define SELECT_ATN3 0x46 182 #define RESELECT3 0x47 183 #define TRANSFER_INFO 0x10 184 #define INIT_CMD_COMPLETE 0x11 185 #define MSG_ACCEPT 0x12 186 #define TRANSFER_PAD 0x18 187 #define SET_ATN 0x1a 188 #define RESET_ATN 0x1b 189 #define SEND_MSG 0x20 190 #define SEND_STATUS 0x21 191 #define SEND_DATA 0x22 192 #define DISCONN_SEQ 0x23 193 #define TERMINATE_SEQ 0x24 194 #define TARG_CMD_COMPLETE 0x25 195 #define DISCONN 0x27 196 #define RECV_MSG 0x28 197 #define RECV_CMD 0x29 198 #define RECV_DATA 0x2a 199 #define RECV_CMD_SEQ 0x2b 200 #define TARGET_ABORT_DMA 0x04 201 202 /* ================================================================== */ 203 204 struct scsi_info_t { 205 dev_link_t link; 206 dev_node_t node; 207 struct Scsi_Host *host; 208 unsigned short manf_id; 209 }; 210 211 /* 212 * Repository for per-instance host data. 213 */ 214 struct sym53c500_data { 215 struct scsi_cmnd *current_SC; 216 int fast_pio; 217 }; 218 219 enum Phase { 220 idle, 221 data_out, 222 data_in, 223 command_ph, 224 status_ph, 225 message_out, 226 message_in 227 }; 228 229 /* ================================================================== */ 230 231 /* 232 * Global (within this module) variables other than 233 * sym53c500_driver_template (the scsi_host_template). 234 */ 235 static dev_link_t *dev_list; 236 static dev_info_t dev_info = "sym53c500_cs"; 237 238 /* ================================================================== */ 239 240 static void 241 chip_init(int io_port) 242 { 243 REG1(io_port); 244 outb(0x01, io_port + PIO_STATUS); 245 outb(0x00, io_port + PIO_FLAG); 246 247 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */ 248 outb(C3_IMG, io_port + CONFIG3); 249 outb(C2_IMG, io_port + CONFIG2); 250 outb(C1_IMG, io_port + CONFIG1); 251 252 outb(0x05, io_port + CLKCONV); /* clock conversion factor */ 253 outb(0x9C, io_port + SRTIMOUT); /* Selection timeout */ 254 outb(0x05, io_port + SYNCPRD); /* Synchronous transfer period */ 255 outb(SYNC_MODE, io_port + SYNCOFF); /* synchronous mode */ 256 } 257 258 static void 259 SYM53C500_int_host_reset(int io_port) 260 { 261 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */ 262 outb(CHIP_RESET, io_port + CMD_REG); 263 outb(SCSI_NOP, io_port + CMD_REG); /* required after reset */ 264 outb(SCSI_RESET, io_port + CMD_REG); 265 chip_init(io_port); 266 } 267 268 static __inline__ int 269 SYM53C500_pio_read(int fast_pio, int base, unsigned char *request, unsigned int reqlen) 270 { 271 int i; 272 int len; /* current scsi fifo size */ 273 274 REG1(base); 275 while (reqlen) { 276 i = inb(base + PIO_STATUS); 277 /* VDEB(printk("pio_status=%x\n", i)); */ 278 if (i & 0x80) 279 return 0; 280 281 switch (i & 0x1e) { 282 default: 283 case 0x10: /* fifo empty */ 284 len = 0; 285 break; 286 case 0x0: 287 len = 1; 288 break; 289 case 0x8: /* fifo 1/3 full */ 290 len = 42; 291 break; 292 case 0xc: /* fifo 2/3 full */ 293 len = 84; 294 break; 295 case 0xe: /* fifo full */ 296 len = 128; 297 break; 298 } 299 300 if ((i & 0x40) && len == 0) { /* fifo empty and interrupt occurred */ 301 return 0; 302 } 303 304 if (len) { 305 if (len > reqlen) 306 len = reqlen; 307 308 if (fast_pio && len > 3) { 309 insl(base + PIO_FIFO, request, len >> 2); 310 request += len & 0xfc; 311 reqlen -= len & 0xfc; 312 } else { 313 while (len--) { 314 *request++ = inb(base + PIO_FIFO); 315 reqlen--; 316 } 317 } 318 } 319 } 320 return 0; 321 } 322 323 static __inline__ int 324 SYM53C500_pio_write(int fast_pio, int base, unsigned char *request, unsigned int reqlen) 325 { 326 int i = 0; 327 int len; /* current scsi fifo size */ 328 329 REG1(base); 330 while (reqlen && !(i & 0x40)) { 331 i = inb(base + PIO_STATUS); 332 /* VDEB(printk("pio_status=%x\n", i)); */ 333 if (i & 0x80) /* error */ 334 return 0; 335 336 switch (i & 0x1e) { 337 case 0x10: 338 len = 128; 339 break; 340 case 0x0: 341 len = 84; 342 break; 343 case 0x8: 344 len = 42; 345 break; 346 case 0xc: 347 len = 1; 348 break; 349 default: 350 case 0xe: 351 len = 0; 352 break; 353 } 354 355 if (len) { 356 if (len > reqlen) 357 len = reqlen; 358 359 if (fast_pio && len > 3) { 360 outsl(base + PIO_FIFO, request, len >> 2); 361 request += len & 0xfc; 362 reqlen -= len & 0xfc; 363 } else { 364 while (len--) { 365 outb(*request++, base + PIO_FIFO); 366 reqlen--; 367 } 368 } 369 } 370 } 371 return 0; 372 } 373 374 static irqreturn_t 375 SYM53C500_intr(int irq, void *dev_id, struct pt_regs *regs) 376 { 377 unsigned long flags; 378 struct Scsi_Host *dev = dev_id; 379 DEB(unsigned char fifo_size;) 380 DEB(unsigned char seq_reg;) 381 unsigned char status, int_reg; 382 unsigned char pio_status; 383 struct scatterlist *sglist; 384 unsigned int sgcount; 385 int port_base = dev->io_port; 386 struct sym53c500_data *data = 387 (struct sym53c500_data *)dev->hostdata; 388 struct scsi_cmnd *curSC = data->current_SC; 389 int fast_pio = data->fast_pio; 390 391 spin_lock_irqsave(dev->host_lock, flags); 392 393 VDEB(printk("SYM53C500_intr called\n")); 394 395 REG1(port_base); 396 pio_status = inb(port_base + PIO_STATUS); 397 REG0(port_base); 398 status = inb(port_base + STAT_REG); 399 DEB(seq_reg = inb(port_base + SEQ_REG)); 400 int_reg = inb(port_base + INT_REG); 401 DEB(fifo_size = inb(port_base + FIFO_FLAGS) & 0x1f); 402 403 #if SYM53C500_DEBUG 404 printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x", 405 status, seq_reg, int_reg, fifo_size); 406 printk(", pio=%02x\n", pio_status); 407 #endif /* SYM53C500_DEBUG */ 408 409 if (int_reg & 0x80) { /* SCSI reset intr */ 410 DEB(printk("SYM53C500: reset intr received\n")); 411 curSC->result = DID_RESET << 16; 412 goto idle_out; 413 } 414 415 if (pio_status & 0x80) { 416 printk("SYM53C500: Warning: PIO error!\n"); 417 curSC->result = DID_ERROR << 16; 418 goto idle_out; 419 } 420 421 if (status & 0x20) { /* Parity error */ 422 printk("SYM53C500: Warning: parity error!\n"); 423 curSC->result = DID_PARITY << 16; 424 goto idle_out; 425 } 426 427 if (status & 0x40) { /* Gross error */ 428 printk("SYM53C500: Warning: gross error!\n"); 429 curSC->result = DID_ERROR << 16; 430 goto idle_out; 431 } 432 433 if (int_reg & 0x20) { /* Disconnect */ 434 DEB(printk("SYM53C500: disconnect intr received\n")); 435 if (curSC->SCp.phase != message_in) { /* Unexpected disconnect */ 436 curSC->result = DID_NO_CONNECT << 16; 437 } else { /* Command complete, return status and message */ 438 curSC->result = (curSC->SCp.Status & 0xff) 439 | ((curSC->SCp.Message & 0xff) << 8) | (DID_OK << 16); 440 } 441 goto idle_out; 442 } 443 444 switch (status & 0x07) { /* scsi phase */ 445 case 0x00: /* DATA-OUT */ 446 if (int_reg & 0x10) { /* Target requesting info transfer */ 447 curSC->SCp.phase = data_out; 448 VDEB(printk("SYM53C500: Data-Out phase\n")); 449 outb(FLUSH_FIFO, port_base + CMD_REG); 450 LOAD_DMA_COUNT(port_base, curSC->request_bufflen); /* Max transfer size */ 451 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG); 452 if (!curSC->use_sg) /* Don't use scatter-gather */ 453 SYM53C500_pio_write(fast_pio, port_base, curSC->request_buffer, curSC->request_bufflen); 454 else { /* use scatter-gather */ 455 sgcount = curSC->use_sg; 456 sglist = curSC->request_buffer; 457 while (sgcount--) { 458 SYM53C500_pio_write(fast_pio, port_base, page_address(sglist->page) + sglist->offset, sglist->length); 459 sglist++; 460 } 461 } 462 REG0(port_base); 463 } 464 break; 465 466 case 0x01: /* DATA-IN */ 467 if (int_reg & 0x10) { /* Target requesting info transfer */ 468 curSC->SCp.phase = data_in; 469 VDEB(printk("SYM53C500: Data-In phase\n")); 470 outb(FLUSH_FIFO, port_base + CMD_REG); 471 LOAD_DMA_COUNT(port_base, curSC->request_bufflen); /* Max transfer size */ 472 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG); 473 if (!curSC->use_sg) /* Don't use scatter-gather */ 474 SYM53C500_pio_read(fast_pio, port_base, curSC->request_buffer, curSC->request_bufflen); 475 else { /* Use scatter-gather */ 476 sgcount = curSC->use_sg; 477 sglist = curSC->request_buffer; 478 while (sgcount--) { 479 SYM53C500_pio_read(fast_pio, port_base, page_address(sglist->page) + sglist->offset, sglist->length); 480 sglist++; 481 } 482 } 483 REG0(port_base); 484 } 485 break; 486 487 case 0x02: /* COMMAND */ 488 curSC->SCp.phase = command_ph; 489 printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n"); 490 break; 491 492 case 0x03: /* STATUS */ 493 curSC->SCp.phase = status_ph; 494 VDEB(printk("SYM53C500: Status phase\n")); 495 outb(FLUSH_FIFO, port_base + CMD_REG); 496 outb(INIT_CMD_COMPLETE, port_base + CMD_REG); 497 break; 498 499 case 0x04: /* Reserved */ 500 case 0x05: /* Reserved */ 501 printk("SYM53C500: WARNING: Reserved phase!!!\n"); 502 break; 503 504 case 0x06: /* MESSAGE-OUT */ 505 DEB(printk("SYM53C500: Message-Out phase\n")); 506 curSC->SCp.phase = message_out; 507 outb(SET_ATN, port_base + CMD_REG); /* Reject the message */ 508 outb(MSG_ACCEPT, port_base + CMD_REG); 509 break; 510 511 case 0x07: /* MESSAGE-IN */ 512 VDEB(printk("SYM53C500: Message-In phase\n")); 513 curSC->SCp.phase = message_in; 514 515 curSC->SCp.Status = inb(port_base + SCSI_FIFO); 516 curSC->SCp.Message = inb(port_base + SCSI_FIFO); 517 518 VDEB(printk("SCSI FIFO size=%d\n", inb(port_base + FIFO_FLAGS) & 0x1f)); 519 DEB(printk("Status = %02x Message = %02x\n", curSC->SCp.Status, curSC->SCp.Message)); 520 521 if (curSC->SCp.Message == SAVE_POINTERS || curSC->SCp.Message == DISCONNECT) { 522 outb(SET_ATN, port_base + CMD_REG); /* Reject message */ 523 DEB(printk("Discarding SAVE_POINTERS message\n")); 524 } 525 outb(MSG_ACCEPT, port_base + CMD_REG); 526 break; 527 } 528 out: 529 spin_unlock_irqrestore(dev->host_lock, flags); 530 return IRQ_HANDLED; 531 532 idle_out: 533 curSC->SCp.phase = idle; 534 curSC->scsi_done(curSC); 535 goto out; 536 } 537 538 static void 539 SYM53C500_release(dev_link_t *link) 540 { 541 struct scsi_info_t *info = link->priv; 542 struct Scsi_Host *shost = info->host; 543 544 DEBUG(0, "SYM53C500_release(0x%p)\n", link); 545 546 /* 547 * Do this before releasing/freeing resources. 548 */ 549 scsi_remove_host(shost); 550 551 /* 552 * Interrupts getting hosed on card removal. Try 553 * the following code, mostly from qlogicfas.c. 554 */ 555 if (shost->irq) 556 free_irq(shost->irq, shost); 557 if (shost->dma_channel != 0xff) 558 free_dma(shost->dma_channel); 559 if (shost->io_port && shost->n_io_port) 560 release_region(shost->io_port, shost->n_io_port); 561 562 link->dev = NULL; 563 564 pcmcia_release_configuration(link->handle); 565 pcmcia_release_io(link->handle, &link->io); 566 pcmcia_release_irq(link->handle, &link->irq); 567 568 link->state &= ~DEV_CONFIG; 569 570 scsi_host_put(shost); 571 } /* SYM53C500_release */ 572 573 static const char* 574 SYM53C500_info(struct Scsi_Host *SChost) 575 { 576 static char info_msg[256]; 577 struct sym53c500_data *data = 578 (struct sym53c500_data *)SChost->hostdata; 579 580 DEB(printk("SYM53C500_info called\n")); 581 (void)snprintf(info_msg, sizeof(info_msg), 582 "SYM53C500 at 0x%lx, IRQ %d, %s PIO mode.", 583 SChost->io_port, SChost->irq, data->fast_pio ? "fast" : "slow"); 584 return (info_msg); 585 } 586 587 static int 588 SYM53C500_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) 589 { 590 int i; 591 int port_base = SCpnt->device->host->io_port; 592 struct sym53c500_data *data = 593 (struct sym53c500_data *)SCpnt->device->host->hostdata; 594 595 VDEB(printk("SYM53C500_queue called\n")); 596 597 DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n", 598 SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->id, 599 SCpnt->device->lun, SCpnt->request_bufflen)); 600 601 VDEB(for (i = 0; i < SCpnt->cmd_len; i++) 602 printk("cmd[%d]=%02x ", i, SCpnt->cmnd[i])); 603 VDEB(printk("\n")); 604 605 data->current_SC = SCpnt; 606 data->current_SC->scsi_done = done; 607 data->current_SC->SCp.phase = command_ph; 608 data->current_SC->SCp.Status = 0; 609 data->current_SC->SCp.Message = 0; 610 611 /* We are locked here already by the mid layer */ 612 REG0(port_base); 613 outb(SCpnt->device->id, port_base + DEST_ID); /* set destination */ 614 outb(FLUSH_FIFO, port_base + CMD_REG); /* reset the fifos */ 615 616 for (i = 0; i < SCpnt->cmd_len; i++) { 617 outb(SCpnt->cmnd[i], port_base + SCSI_FIFO); 618 } 619 outb(SELECT_NO_ATN, port_base + CMD_REG); 620 621 return 0; 622 } 623 624 static int 625 SYM53C500_host_reset(struct scsi_cmnd *SCpnt) 626 { 627 int port_base = SCpnt->device->host->io_port; 628 629 DEB(printk("SYM53C500_host_reset called\n")); 630 spin_lock_irq(SCpnt->device->host->host_lock); 631 SYM53C500_int_host_reset(port_base); 632 spin_unlock_irq(SCpnt->device->host->host_lock); 633 634 return SUCCESS; 635 } 636 637 static int 638 SYM53C500_biosparm(struct scsi_device *disk, 639 struct block_device *dev, 640 sector_t capacity, int *info_array) 641 { 642 int size; 643 644 DEB(printk("SYM53C500_biosparm called\n")); 645 646 size = capacity; 647 info_array[0] = 64; /* heads */ 648 info_array[1] = 32; /* sectors */ 649 info_array[2] = size >> 11; /* cylinders */ 650 if (info_array[2] > 1024) { /* big disk */ 651 info_array[0] = 255; 652 info_array[1] = 63; 653 info_array[2] = size / (255 * 63); 654 } 655 return 0; 656 } 657 658 static ssize_t 659 SYM53C500_show_pio(struct class_device *cdev, char *buf) 660 { 661 struct Scsi_Host *SHp = class_to_shost(cdev); 662 struct sym53c500_data *data = 663 (struct sym53c500_data *)SHp->hostdata; 664 665 return snprintf(buf, 4, "%d\n", data->fast_pio); 666 } 667 668 static ssize_t 669 SYM53C500_store_pio(struct class_device *cdev, const char *buf, size_t count) 670 { 671 int pio; 672 struct Scsi_Host *SHp = class_to_shost(cdev); 673 struct sym53c500_data *data = 674 (struct sym53c500_data *)SHp->hostdata; 675 676 pio = simple_strtoul(buf, NULL, 0); 677 if (pio == 0 || pio == 1) { 678 data->fast_pio = pio; 679 return count; 680 } 681 else 682 return -EINVAL; 683 } 684 685 /* 686 * SCSI HBA device attributes we want to 687 * make available via sysfs. 688 */ 689 static struct class_device_attribute SYM53C500_pio_attr = { 690 .attr = { 691 .name = "fast_pio", 692 .mode = (S_IRUGO | S_IWUSR), 693 }, 694 .show = SYM53C500_show_pio, 695 .store = SYM53C500_store_pio, 696 }; 697 698 static struct class_device_attribute *SYM53C500_shost_attrs[] = { 699 &SYM53C500_pio_attr, 700 NULL, 701 }; 702 703 /* 704 * scsi_host_template initializer 705 */ 706 static struct scsi_host_template sym53c500_driver_template = { 707 .module = THIS_MODULE, 708 .name = "SYM53C500", 709 .info = SYM53C500_info, 710 .queuecommand = SYM53C500_queue, 711 .eh_host_reset_handler = SYM53C500_host_reset, 712 .bios_param = SYM53C500_biosparm, 713 .proc_name = "SYM53C500", 714 .can_queue = 1, 715 .this_id = 7, 716 .sg_tablesize = 32, 717 .cmd_per_lun = 1, 718 .use_clustering = ENABLE_CLUSTERING, 719 .shost_attrs = SYM53C500_shost_attrs 720 }; 721 722 #define CS_CHECK(fn, ret) \ 723 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) 724 725 static void 726 SYM53C500_config(dev_link_t *link) 727 { 728 client_handle_t handle = link->handle; 729 struct scsi_info_t *info = link->priv; 730 tuple_t tuple; 731 cisparse_t parse; 732 int i, last_ret, last_fn; 733 int irq_level, port_base; 734 unsigned short tuple_data[32]; 735 struct Scsi_Host *host; 736 struct scsi_host_template *tpnt = &sym53c500_driver_template; 737 struct sym53c500_data *data; 738 739 DEBUG(0, "SYM53C500_config(0x%p)\n", link); 740 741 tuple.TupleData = (cisdata_t *)tuple_data; 742 tuple.TupleDataMax = 64; 743 tuple.TupleOffset = 0; 744 tuple.DesiredTuple = CISTPL_CONFIG; 745 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); 746 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple)); 747 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse)); 748 link->conf.ConfigBase = parse.config.base; 749 750 tuple.DesiredTuple = CISTPL_MANFID; 751 if ((pcmcia_get_first_tuple(handle, &tuple) == CS_SUCCESS) && 752 (pcmcia_get_tuple_data(handle, &tuple) == CS_SUCCESS)) 753 info->manf_id = le16_to_cpu(tuple.TupleData[0]); 754 755 /* Configure card */ 756 link->state |= DEV_CONFIG; 757 758 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; 759 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); 760 while (1) { 761 if (pcmcia_get_tuple_data(handle, &tuple) != 0 || 762 pcmcia_parse_tuple(handle, &tuple, &parse) != 0) 763 goto next_entry; 764 link->conf.ConfigIndex = parse.cftable_entry.index; 765 link->io.BasePort1 = parse.cftable_entry.io.win[0].base; 766 link->io.NumPorts1 = parse.cftable_entry.io.win[0].len; 767 768 if (link->io.BasePort1 != 0) { 769 i = pcmcia_request_io(handle, &link->io); 770 if (i == CS_SUCCESS) 771 break; 772 } 773 next_entry: 774 CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple)); 775 } 776 777 CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq)); 778 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf)); 779 780 /* 781 * That's the trouble with copying liberally from another driver. 782 * Some things probably aren't relevant, and I suspect this entire 783 * section dealing with manufacturer IDs can be scrapped. --rct 784 */ 785 if ((info->manf_id == MANFID_MACNICA) || 786 (info->manf_id == MANFID_PIONEER) || 787 (info->manf_id == 0x0098)) { 788 /* set ATAcmd */ 789 outb(0xb4, link->io.BasePort1 + 0xd); 790 outb(0x24, link->io.BasePort1 + 0x9); 791 outb(0x04, link->io.BasePort1 + 0xd); 792 } 793 794 /* 795 * irq_level == 0 implies tpnt->can_queue == 0, which 796 * is not supported in 2.6. Thus, only irq_level > 0 797 * will be allowed. 798 * 799 * Possible port_base values are as follows: 800 * 801 * 0x130, 0x230, 0x280, 0x290, 802 * 0x320, 0x330, 0x340, 0x350 803 */ 804 port_base = link->io.BasePort1; 805 irq_level = link->irq.AssignedIRQ; 806 807 DEB(printk("SYM53C500: port_base=0x%x, irq=%d, fast_pio=%d\n", 808 port_base, irq_level, USE_FAST_PIO);) 809 810 chip_init(port_base); 811 812 host = scsi_host_alloc(tpnt, sizeof(struct sym53c500_data)); 813 if (!host) { 814 printk("SYM53C500: Unable to register host, giving up.\n"); 815 goto err_release; 816 } 817 818 data = (struct sym53c500_data *)host->hostdata; 819 820 if (irq_level > 0) { 821 if (request_irq(irq_level, SYM53C500_intr, SA_SHIRQ, "SYM53C500", host)) { 822 printk("SYM53C500: unable to allocate IRQ %d\n", irq_level); 823 goto err_free_scsi; 824 } 825 DEB(printk("SYM53C500: allocated IRQ %d\n", irq_level)); 826 } else if (irq_level == 0) { 827 DEB(printk("SYM53C500: No interrupts detected\n")); 828 goto err_free_scsi; 829 } else { 830 DEB(printk("SYM53C500: Shouldn't get here!\n")); 831 goto err_free_scsi; 832 } 833 834 host->unique_id = port_base; 835 host->irq = irq_level; 836 host->io_port = port_base; 837 host->n_io_port = 0x10; 838 host->dma_channel = -1; 839 840 /* 841 * Note fast_pio is set to USE_FAST_PIO by 842 * default, but can be changed via "sysfs". 843 */ 844 data->fast_pio = USE_FAST_PIO; 845 846 sprintf(info->node.dev_name, "scsi%d", host->host_no); 847 link->dev = &info->node; 848 info->host = host; 849 850 if (scsi_add_host(host, NULL)) 851 goto err_free_irq; 852 853 scsi_scan_host(host); 854 855 goto out; /* SUCCESS */ 856 857 err_free_irq: 858 free_irq(irq_level, host); 859 err_free_scsi: 860 scsi_host_put(host); 861 err_release: 862 release_region(port_base, 0x10); 863 printk(KERN_INFO "sym53c500_cs: no SCSI devices found\n"); 864 865 out: 866 link->state &= ~DEV_CONFIG_PENDING; 867 return; 868 869 cs_failed: 870 cs_error(link->handle, last_fn, last_ret); 871 SYM53C500_release(link); 872 return; 873 } /* SYM53C500_config */ 874 875 static int 876 SYM53C500_event(event_t event, int priority, event_callback_args_t *args) 877 { 878 dev_link_t *link = args->client_data; 879 struct scsi_info_t *info = link->priv; 880 881 DEBUG(1, "SYM53C500_event(0x%06x)\n", event); 882 883 switch (event) { 884 case CS_EVENT_CARD_REMOVAL: 885 link->state &= ~DEV_PRESENT; 886 if (link->state & DEV_CONFIG) 887 SYM53C500_release(link); 888 break; 889 case CS_EVENT_CARD_INSERTION: 890 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; 891 SYM53C500_config(link); 892 break; 893 case CS_EVENT_PM_SUSPEND: 894 link->state |= DEV_SUSPEND; 895 /* Fall through... */ 896 case CS_EVENT_RESET_PHYSICAL: 897 if (link->state & DEV_CONFIG) 898 pcmcia_release_configuration(link->handle); 899 break; 900 case CS_EVENT_PM_RESUME: 901 link->state &= ~DEV_SUSPEND; 902 /* Fall through... */ 903 case CS_EVENT_CARD_RESET: 904 if (link->state & DEV_CONFIG) { 905 pcmcia_request_configuration(link->handle, &link->conf); 906 /* See earlier comment about manufacturer IDs. */ 907 if ((info->manf_id == MANFID_MACNICA) || 908 (info->manf_id == MANFID_PIONEER) || 909 (info->manf_id == 0x0098)) { 910 outb(0x80, link->io.BasePort1 + 0xd); 911 outb(0x24, link->io.BasePort1 + 0x9); 912 outb(0x04, link->io.BasePort1 + 0xd); 913 } 914 /* 915 * If things don't work after a "resume", 916 * this is a good place to start looking. 917 */ 918 SYM53C500_int_host_reset(link->io.BasePort1); 919 } 920 break; 921 } 922 return 0; 923 } /* SYM53C500_event */ 924 925 static void 926 SYM53C500_detach(dev_link_t *link) 927 { 928 dev_link_t **linkp; 929 930 DEBUG(0, "SYM53C500_detach(0x%p)\n", link); 931 932 /* Locate device structure */ 933 for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next) 934 if (*linkp == link) 935 break; 936 if (*linkp == NULL) 937 return; 938 939 if (link->state & DEV_CONFIG) 940 SYM53C500_release(link); 941 942 if (link->handle) 943 pcmcia_deregister_client(link->handle); 944 945 /* Unlink device structure, free bits. */ 946 *linkp = link->next; 947 kfree(link->priv); 948 link->priv = NULL; 949 } /* SYM53C500_detach */ 950 951 static dev_link_t * 952 SYM53C500_attach(void) 953 { 954 struct scsi_info_t *info; 955 client_reg_t client_reg; 956 dev_link_t *link; 957 int ret; 958 959 DEBUG(0, "SYM53C500_attach()\n"); 960 961 /* Create new SCSI device */ 962 info = kmalloc(sizeof(*info), GFP_KERNEL); 963 if (!info) 964 return NULL; 965 memset(info, 0, sizeof(*info)); 966 link = &info->link; 967 link->priv = info; 968 link->io.NumPorts1 = 16; 969 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; 970 link->io.IOAddrLines = 10; 971 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE; 972 link->irq.IRQInfo1 = IRQ_LEVEL_ID; 973 link->conf.Attributes = CONF_ENABLE_IRQ; 974 link->conf.Vcc = 50; 975 link->conf.IntType = INT_MEMORY_AND_IO; 976 link->conf.Present = PRESENT_OPTION; 977 978 /* Register with Card Services */ 979 link->next = dev_list; 980 dev_list = link; 981 client_reg.dev_info = &dev_info; 982 client_reg.event_handler = &SYM53C500_event; 983 client_reg.EventMask = CS_EVENT_RESET_REQUEST | CS_EVENT_CARD_RESET | 984 CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL | 985 CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME; 986 client_reg.Version = 0x0210; 987 client_reg.event_callback_args.client_data = link; 988 ret = pcmcia_register_client(&link->handle, &client_reg); 989 if (ret != 0) { 990 cs_error(link->handle, RegisterClient, ret); 991 SYM53C500_detach(link); 992 return NULL; 993 } 994 995 return link; 996 } /* SYM53C500_attach */ 997 998 MODULE_AUTHOR("Bob Tracy <rct@frus.com>"); 999 MODULE_DESCRIPTION("SYM53C500 PCMCIA SCSI driver"); 1000 MODULE_LICENSE("GPL"); 1001 1002 static struct pcmcia_driver sym53c500_cs_driver = { 1003 .owner = THIS_MODULE, 1004 .drv = { 1005 .name = "sym53c500_cs", 1006 }, 1007 .attach = SYM53C500_attach, 1008 .detach = SYM53C500_detach, 1009 }; 1010 1011 static int __init 1012 init_sym53c500_cs(void) 1013 { 1014 return pcmcia_register_driver(&sym53c500_cs_driver); 1015 } 1016 1017 static void __exit 1018 exit_sym53c500_cs(void) 1019 { 1020 pcmcia_unregister_driver(&sym53c500_cs_driver); 1021 } 1022 1023 module_init(init_sym53c500_cs); 1024 module_exit(exit_sym53c500_cs); 1025